Thread Repair Tools / Inserts

Free Next Day shipping. TIME-SERT 5553 Ford Spark Plug Thread Repair/Replace Stripped or Missing Threads. Models include 1.9, 3.8, 4.6, 5.4, 6.8 liter engines 2 and 4 Valve. For Triton and other applications - See chart for other vehicles covered. This is a Big Sert (Time-Sert's name for over-sized) kit which works when previous repairs with Heli-Coil type inserts fail.

This kit is not recommended for holes larger than .663" (16.8mm). See the Time Sert 5600for holes up to .73".

*Note fully threaded spark plugs require a different insert in addition to this kit. The 51457 is the most popular fully threaded one which is 16.8mm long with a taper seat (requires 51484A to be used on setting tool). They are sold separately.

Question: Will my fully threaded spark plugs (all the way up to the taper) work with the inserts that come in the kit which have threads only about 1/2 way?

Answer: Yes they will. If preferred, we also have fully threaded inserts (PN 51457) which have twice the number of threads for more holding power. *Note that partially threaded plugs will NOT install properly in the 51457 fully threaded insert so the inserts included in the kit have to be used. These inserts are still much stronger than the original aluminum threads.

More questions answered in our video series below, like - Which is the best brand? How do you determine the valves are closed and why does it matter?

Jeep Grand CherokeeInside door handle installation video for the Jeep Grand Cherokee inner door handles including how to remove and install the interior door panel. See the following link for the video and replacement inside handles on sale now.See Video and Grand Cherokee Inside Door Handles